#include "stdio.h"


int twoDigitAdd(int a, int b) {
    //todo write your algorithm here
	int sum;
	if (a<0||b<0)
	{ 
		printf("输入要为正哦");
	}
	else if (a>=0||b>=0)
	{
		a=a%100;
		b=b%100;
	}
	sum=a+b;
	if(sum>=100)
	{ 
		sum=sum%100;
	}
	return sum;
}




int main(void)
{
    int a ;
    int b ;
	printf("请输入a=,b= \n");
	scanf("%d %d",&a,&b);
    printf("%d add %d is %d", a, b, twoDigitAdd(a, b));
	scanf("%d");
    return 0;
}
